The proboscis monkey is a unique primate native to the rainforests of Borneo and Sumatra. It is easily recognized by its large, distinctive nose, which can be particularly prominent in males. These monkeys have a reddish-brown coat and a long tail, which helps them balance as they move through the trees. They primarily feed on leaves, fruits, and seeds. Proboscis monkeys are social animals, living in groups that can consist of up to 20 individuals. They are known for their strong swimming abilities, often using rivers to escape predators. Their populations are threatened by habitat loss due to deforestation and hunting, making conservation efforts essential for their survival.